Serpens and KarkenTrader: The anomalous withdrawals in the ledger are your own withdrawals. We had some bitcoin withdrawals from a while back that were stuck in "sent" status, and this was fixed earlier, so they've gone to "success" status. A withdrawal in "sent" status is withheld, so you can't use the funds, but it isn't yet reflected in your ledger. It's only with "success" status that the withdrawal is reflected in your ledger. I'll PM each of you a list of the relevant withdrawal IDs. Of course, if you still can't make sense of it, let me know.

It's obviously scary to see unknown withdrawals in your ledger, but in this case it's nothing to worry about.  

I have a question I haven't managed to find an answer to anywhere:

What are the minimum amounts to trade? I usually trade small amounts (<5EUR) at a time, just for fun, and often I get "amount too low" errors, but I haven't figured out what the ACTUAL minimum is, both for BTC and EUR trades. Anyone know? Thanks.